南昌地区雷击事件气候统计与天气分析

Climate statistics and weather analysis of lightning strike events in Nanchang area

为了更好地监测预警南昌地区雷电天气,减少雷击引发的人员伤亡事件的发生,使用南昌市2000-2022年历史雷击事件资料进行气候统计与天气分析。结果表明:2000-2022年南昌地区雷击事件共出现96次,雷击事件的年、月、日变化均为“单峰”型;500 hPa高空槽,低层辐合、高层辐散等天气系统是产生雷击事件的重要天气系统,中层干舌与低层湿区的交汇处最易产生雷击事件;雷击事件的10 min闪电频次与45dBZ雷达回波强度相关性较好,闪电密集发生在≥45dBZ回波中。研究结果为南昌地区雷击事件的监测预警提供了分析依据。

In order to monitor better and warn of lightning weather in Nanchang area and reduce the occurrence of casualties caused by lightning strikes,climate statistics and weather analysis were conducted using historical lightning event data from Nanchang City from 2000 to 2022.The results indicate that:From 2000 to 2022,there were a total of 96 lightning strikes in the Nanchang area,and the annual,monthly,and daily changes of lightning strikes were all of a"Unimodal"type.The 500 hPa high altitude trough,low level convergence,high level divergence,and other weather systems are important weather systems that generate lightning events.The intersection of the middle dry tongue and the lower wet zone is the most prone to lightning events.The 10 minutes lightning frequency of a lightning strike event has a good correlation with the intensity of the 45 dBZ radar echo,with dense lightning occurring in≥45 dBZ echoes.The research results provide an analytical basis for the monitoring and warning of lightning strike events in the Nanchang area.